Recipe
Rust Async Patterns
Practical async patterns for Tokio-based services — spawn, select, cancellation, and backpressure.
Spawn + Join
Fan out independent work with tokio::spawn and collect results with JoinSet or join!.
Select + Timeout
Race futures with tokio::select!. Wrap any future in tokio::time::timeout to enforce deadlines.
Cancellation Tokens
Propagate graceful shutdown through the entire task tree with CancellationToken. Drop the token to signal all listeners.
Backpressure with Channels
Bound mpsc channels naturally throttle producers. When the buffer fills, send().await blocks until the consumer drains.
Stream Processing
Use StreamExt combinators —buffered, throttle, chunks — to control concurrency and rate-limit incoming data.